Smelly, unpleasant, or moldy in odor; having a festering or stale quality.
Likely derived from 'fest' or 'fester,' possibly influenced by slang or regional speech patterns. It may combine 'fester' with the diminutive or quality suffix -y, creating an informal adjective for something that smells bad.
This word is mostly Australian and British slang, and it's a great example of how informal language spreads through communities—what started as a casual descriptor for gross smells is now recognized in some dictionaries. It shows how language naturally creates words for everyday experiences we complain about.
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